216392808 has 16 divisors (see below), whose sum is σ = 540982080. Its totient is φ = 72130928.

The previous prime is 216392807. The next prime is 216392831. The reversal of 216392808 is 808293612.

It is a happy number.

216392808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (216392807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4508160 + ... + 4508207.

It is an arithmetic number, because the mean of its divisors is an integer number (33811380).

Almost surely, 2^216392808 is an apocalyptic number.

It is an amenable number.

216392808 is an abundant number, since it is smaller than the sum of its proper divisors (324589272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216392808 is a wasteful number, since it uses less digits than its factorization.

216392808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9016376 (or 9016372 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 216392808 is about 14710.2959861452. The cubic root of 216392808 is about 600.3634908573.

The spelling of 216392808 in words is "two hundred sixteen million, three hundred ninety-two thousand, eight hundred eight".